Brake-band-riveting tool



June 5, .1928 1,672,271

G. M CALLUM BRAKE BAND RIVETING TOOL Filed Jan. 17, 1927 I N VEN TOR. 6am. /V6}94 4 0/} A TTORNE Y.

Patented June 5, 1928.

Guru mama. 'or. "SI -LVERDALE, AS INGTON, ass1on on-oronn:n1nr :ro some i TS IGNAL,'OZFfKISTiU?'COUNTYfWASIIIHGTO'N.

nmammmmmm Application filed January 17, 1927. Serial No. 161,656.

This invention is directed to an implement for use in connection with vehicle brake bands, involving a construction wherein the rivets connecting the worn fabric band to the metallic bandmay be readily severed and the rivets connecting a new fabric band to the metallic band may be readily set.

The invention is illustrated in the accompanying drawings, in which:

Figure 1 is a view in elevation'of the improved implement with the parts arranged to sever the rivets connecting the worn fabric band and the metallic band. I

Figure 2 is an enlarged sectional viewillustrating the use of the implement in applying new rivets to secure a new fabric band to the metallic band.

Figure 3 is a section on line 3-3 of Figure 1. v

The improved implement comprises a base 1 of substantial structure formed near one end with a transverse channel 2 opening through the top of the base and having the front wall 3 thereof of less height than the opposite or rear wall 4 and the latter inclined from the vertical as shown. Rising from the base at a point remote from the channel 2 are strap-like uprights 5 which extend above the upper surface of the base and form a support for an operating barf), the latter being pivotally supported on a pivot pin 7 in the form of a bolt connecting the upper ends of the strap uprights 5.

The operating bar has an end remote from its pivotal point formed as a cutting member 8, the latter being arranged to cooperate with a brake band 18 positioned in the channel 2. The operating bar is actuated through the medium of a lever 9 having a circular head 10 to bear upon the operating bar, which circular head is rotatably supported eccentrically at 11 in the upper ends of links 12 which are rigidly secured to the base in advance of the pivotal support of the operating bar. Through obvious movement of this lever 9, the operating bar may be depressed for its necessary action in connection with the desired function.

The operating bar 6 is held in normal 0- sition and returned to normal position fhllowing operation of the lever 9 through the medium of a spring 13, one terminal of which is secured at 14 in the block from which the spring extends upwardly beneath forwardly alongside of said bar to a point the pivot pin 6 of the operating bar, and 1 approximately on line with the upper sur- 1 face of the bar, being then projected downwardly and forwardly to the lower surface of the bar and carried laterally beneath the bar and upwardly on the opposite side, as at 14. This insures that the bar is spring supported at a point in advance of the ivotin a manner which will permit the rea y separation of the spring when desired and yet insure that the bar will return to normal position following the actuation of the lever.

In rear of the cutting edge 8 of the operating bar, the latter is formed with a rivet-upsetting member 15 and the base with a corres onding anvil 16 preferably provided wit a point 17 to cooperate with the hollow rivets usually employed with. brake bands. 1

In the use of the implement, the brake band from which the old fabric is to be removed, as indicated at'18, is seated on the bottom of the channel 2 with one side bearing against the front wall 3 and held therein so that the cutting edge'8 of the bar will, when the lever 9 is operated in the direction of the arrow, be moved downwardly to cause said edge to ride between the head of the rivet and the fabric band, care being taken to avoid cutting the band if the rivet head is on the fabric side. "When the rivets have been cut and the old band removed, the new band properly punched is applied to themetallic band and the rivets passed throu h the aligned openings in the bands. T e rivets are then successively introduced between the upsetting tool and the anvil and the lever 9 further operated to properly upset the rivets to secure the new'band in place.

The new tool is portable and may be readily carried as an accessory and is complete in itself to facilitate the easy and convenient removal of a worn brake band and the securing inposition of a new brake band whenever and wherever such substitution may be desired. 7

What Iclaim as new is"; A brake band implement comprising a base formed with a channel to receive the brake band, one side of the latter bearing against the front wall of said channel when insertedin the channel,- an operating bar pivotally supported on the base and having I its forward end extended downwardly an formed with a cutting edge adjacent the ally mounted in the upper ends of the bearchannel, whereby to cooperate with the riving arms, the cam head engaging the operaets on the brake band arranged in said 'chaning bar, and a spring interposed between the 19 nel to thereby sever such rivets to disconbaseand operating bar to normally hold the 5 nect the fabric band from the metallic band, latter in spaced relation from the base,

a pair of bearing arms extending up from In testimony whereof I afiix my signature.

the base, a lever having a cam head pivota- GUYL MCCALLUM. 

